‘ 
50 
Tas. LXXVIIL PISA. NODIPES. 
P. rostro horizontali ; brace feinorumque apice nodosis. 
Habitat ¥ 
: 2 
KNOT-LEGGED PISA. 
Rostrum horizontal; arms and tips ofthe thighs knotted. 
The annexed plate represents 1 the male, the abdomen of 
the male and female, with the external double pedipalpe, 
of the natural size, executed from a ‘drawing by Mr. James 
Sowerby, jun. | wey a 
This species may readily Me distinguished from Pisa 
Gippsil, (cancer Biaculeatus, Montagu), by the tubercles 
on the tops of the thighs and on the arms, and by the po- 
sition of the rostrum, whieh i in that species bends down- 
D og wi Wy 
Aes A tea 
wards. 
jo A figure of PF Gibbsii ill be. shortly given in Malacos- 
traca Podophthalmata Britannia, Tab. 20. 
